145312344 has 96 divisors (see below), whose sum is σ = 419627520. Its totient is φ = 45321408.

The previous prime is 145312337. The next prime is 145312373. The reversal of 145312344 is 443213541.

It is a happy number.

145312344 is a `hidden beast` number, since 1 + 4 + 5 + 312 + 344 = 666.

It is a super-2 number, since 2×145312344² = 42231354637548672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76899 + ... + 78765.

It is an arithmetic number, because the mean of its divisors is an integer number (4371120).

Almost surely, 2^145312344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145312344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209813760).

145312344 is an abundant number, since it is smaller than the sum of its proper divisors (274315176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145312344 is a wasteful number, since it uses less digits than its factorization.

145312344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1949 (or 1942 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 145312344 is about 12054.5569806609. The cubic root of 145312344 is about 525.7357412310.

Adding to 145312344 its reverse (443213541), we get a palindrome (588525885).

The spelling of 145312344 in words is "one hundred forty-five million, three hundred twelve thousand, three hundred forty-four".